Hi Ray,
The 'member projects' have been run for a few years now. The idea is that a specific orchid is chosen for the project and everyone taking part buys it arround the same time and then posts updates on how it is growing and how they are caring for it.
Generally once someone starts one there are criteria laid out for the type of orchid and people make suggestions for what they think is suitible. There will be a thread for people to sign up to take part, then there will be a poll for those who have signed up to vote on which plant should be picked. That's when the fun begins as everyone buys the plant and starts growing it.
This year for the first time we had three projects going at once, cool, intermediate & warm. This is the first time I took part and the great thing is that you often end up growing something you would not have otherwise tried and it can be really exciting to see how it does for you.